Anti-electromagnetic interference condenser microphone

A capacitive microphone and anti-electromagnetic interference technology, applied in the direction of electrostatic transducer microphones, etc., can solve the problems of high cost and complicated process, and achieve the effect of low cost, simple process and easy manufacture

Active Publication Date: 2011-12-21
ENPING HAITIAN ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this solution needs to place the FET away from the circuit board, and also consider the connection method between the FET and the circuit board. The process is complicated and the cost is high.

Method used

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Embodiment Construction

[0031] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings. Wherein, the same parts adopt the same reference numerals.

[0032] figure 1 Shown is an exploded perspective view of an anti-electromagnetic interference condenser microphone according to a specific embodiment of the present invention. As shown in the figure, the anti-electromagnetic interference condenser microphone is generally represented by a mark A (hereinafter referred to as microphone A), and Microphone A is a microphone that can be used in equipment such as a conference system, and includes a base A1, a microphone A2, a microphone A3, and a network head A4.

[0033] figure 2 Shown is figure 1 The front perspective schematic diagram of the microphone A3 in the shown anti-electromagnetic interference condenser microphone...

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Abstract

The invention discloses an anti-electromagnetic-interference capacitor microphone, which comprises a mike with a shell. A circuit board is arranged on one side of the opening of the shell. A first terminal and a second terminal for outputting signals are arranged on one surface of the circuit board which faces towards the external side of the shell. A diaphragm ring, a diaphragm, a gasket and a cavity are sequentially arranged in the shell. A polar plate body and a shielding body are arranged in the cavity. At least one field effect tube and a filter capacitor are arranged on the internal side of the circuit board. The shielding body is made of groove-shaped metal. The field effect tube and the capacitor are arranged in the shielding body. Since the shielding body which is specially used for covering components such as the field effect tube is arranged in the shell of the mike of the microphone, additional parts are not required to be arranged outside the shell to shield electromagnetic interference, the components on the circuit board are not required to be adjusted, the process is simple, the anti-electromagnetic-interference capacitor microphone is easy to manufacture and the cost is low.

Description

technical field [0001] The invention relates to a capacitive microphone, in particular to an anti-electromagnetic interference capacitive microphone capable of shielding electromagnetic interference such as mobile phone signals. Background technique [0002] Microphones that are usually used in equipment such as conference systems generally include a base, a microphone, a microphone, and a network head, etc., and the core component is the microphone responsible for converting sound signals into electrical signals. Microphones generally used in conference systems are mostly capacitive microphones, which include dustproof cloth, casing, membrane ring, diaphragm, gasket, plate, cavity and circuit board from the side of the sound input. A copper ring in electrical contact with the polar plate and the circuit board is provided, and elements such as a field effect tube are provided on the circuit board. [0003] Among them, the dustproof cloth is used to cover the sound hole on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R19/04
Inventor 张佳尧
Owner ENPING HAITIAN ELECTRONICS TECH
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